Provided is a wind and solar energy storage combined power station reactive voltage control method which can provide a wind and solar energy storage combined power station reactive distribution method according to the deviation between a wind and solar energy storage combined power station grid-connected point voltage target value and a grid-connected point bus voltage measured value. The method considers the reactive capabilities of all reactive power sources under each main transformer of a wind and solar energy storage combined power station, fully utilizes the regulation rapidity of a dynamic reactive power compensation device, realizes the reactive coordination control of a draught fan, a photovoltaic inverter, an energy storage converter and a reactive compensation device, ad meets the power grid reactive voltage requirement for a wind and solar energy storage combined power station.